Underwater footage filmed in Southern atolls, Maldives.
I included some footage of human garbage in the ocean(#floatingdeath).
For more information, please read Floating Death by Tony Wu and Ghost net article on wiki.

Ghost nets are fishing nets that have been left or lost in the ocean by fishermen. These nets, often nearly invisible in the dim light, can be left tangled on a rocky reef or drifting in the open sea. They can entangle fish, dolphins, sea turtles, sharks, dugongs, crocodiles, seabirds, crabs, and other creatures… quote from Wikipedia.